Turret-lathe



4 Sheets-Sham 1.

QN@ Mdem J. RODGERS. TURRB'S L-ATHE. N0, 596,830. Patented Jem. 4, 1898.

4 Sheets-Sheet 2; J. RDGERS. TURRET LATER.

(NQ maden (No Model.) 4 .Sheets-Sheet 4.

J. RODGERS. TURRET LATER.

No, 596.830. Patete Jem. 4,1898.

v.is

UNITED STATES PATENT ric t.

'JOHN RODGERS, OF lVILllIERDING, PENNSYLVANIA, ASSG'NOR Ol? ONE- llALl" TO ADRA G. HOLMES, OF PITTSBURG, PENNSYLYANIA.

TU RRET-LATHE.

SPECIFICATION forming part of Letters Patent No. 596,830,dated J anuary 4, 1898.

Application filed March 19, 1897. Serial No. 628,376. (No model.) l Y T @El whom, t 71mg/ concern.-

Be it known that I, JoHN Rononns, a citizen of the United States, residing at lVihnerding, in the county of Allegheny and State of; Pennsylvnin, have invented or discovered n new and useful Improvement in Turretl'iathes, of which the iollowingiszt full, clear, and exact description, reference being had to the accompanying drawings, forming part of this application, in which,

Figure l n pla-n view of my improved turretlathe. Fig. 2 is n central longitudinal section thereof, taken on the line H Hof Fig. l. Fig. 3 is a plan view showing the arrangement of the main power und driving shafts, the upper part of the machine having been removed above the line lll lll oi Fig. 2. liig; et is a. cross-section taken on the line 1V IV of Fig. 2.l Fig. 5 is o. cross-section taken on the line V V of Fig. 2. Fig. (5 is n sectional detail view of one of the chuck-spindles indicated by the line VI Vl of Fig. l. Fig. 7 is n eross-section through the end of the shiftingr lever and ta bles indicated by the line VII VII of Fig. 5.

My invention consists of nn improvement in turret-lathes for the successive manipulartion of lnthework, and is designed for the pur pose of securing greater simplicity in the construction of the machine and elliciency and rapidity in its manipulation and action, as

,shell be hereinafter set forth.

Referring to the drawings, 2 is n main base upon which by suitable side framework 3 is supported the main stationary table 4. At its center the table 4 is provided with e. eircular raised bearingtrack 5, upon which is supported the upper circular revolving turret 6,' "pon which are rsdiully arranged the various revolving chuck-holders, mounted in bearings 7, secured to the turret 6. A Vertical Ashaft S is mounted centrally of the machine,

A having a. step-box bearing 9 in the bese 2, and

this shaft serves to receive motion from n main driving-shsft10,provided with n stepped pulley l1, through bevel-wheels l2 13, secured tothe shafts 10 and 8, respectively, and to .'iistriinte the power by driven bevel-wheels f 14 to n series of lateral horizontal shafts 15.

Suitable bearings furthe shafts are provided in the pillow-blocks 16 17, mounted on the base and side freine. A vertical bearing 1S,

secured to the center of the uppcrtzlblc i, serves to hold the shaft S in n cent1-nl up light position, ond :it its top the shaft S is pro vided with n, muster bevel-wheel lil. The chuckholders consist` of :i two-pari. shell 20 2], the part 2O hnving. n reduced extension 20' plissing lhrough the hollow shaft 2l, to which is kc) ed shovel-wheel 22,1neshiug into the wheel 19. At its otherend the shnft 2U is provided with n chuck 2i ,of any approved desigmndnpted. to receive ind hold the piece to be operated upon. To the hollow driven slnri'til is mixed a. clutch-2l, n. correspondingclutch 25 boing slidingly mounted by n spline 215 upon the shaft 2o and adapted to engage :uid disengnge with the clutch 24.

A hund-lever 2G', pivoted to the top ol' the turretA G at 27, engages un annular groove 2S of the clutch 25, by which ineens the clutch is thrown-into and out oi gem.

In the machine illustrated in the drawings I have shown six chuck-holders und chucks equally r1-ranged und spaced, nud :it live ol' the positions opposite the chucks are located reciprocatingr stationary (ns to rotary motion) tool-holders 29, mounted in upright beni-ings 3U, secured upon the table `l. rlhese holders ure provided :it their inner ends with cuttingtools a, which are ndvnnved toward und withdrawn from the chucks in the manner I shall now describe.

It will be seen, Fig. ll, that from the main power-shaft motion is imparted through gearing l2 125 le to shafts S und l5, each of the Shafts corresponding in position to one of the tool-holders 2). Above earch of such shafts l5 is located n short counter-shaft .31,

suitably supported in bearings 32 no, upon which is mounted a. cum l, provided with u canngroove 35. Above the counter-shaft 3l is mounted n reciprocating rod 3G, provided with a. cross-head 37 and iinger 38, projecting into the Cam-groove 35, the outer end of the rod heilig pivotnlly connected at 2li) to the lower eudyof n lever 40, pivoted nt its middle to a. bracket 4l und nt the upper end pivot- :tlly secured to the outer end of the toolholder 29 nt '12,

To the shalt 3l is secured n ruiter-wheel 3, into which meshes e. `simihir ruiter-wheel yii, mounted on the upper end oi' n short shaft IOC vtended from the main frame.

end of the shaft i5 is secured a wormwheel t7, and upon each shaft 15 is a worm 4S, intermeshin g therewith and by which the wormwheel, shaft, miter-wheels, shaft 3l, and cam are operated. inasmuch as the initial speed of the power-shaft and lateral shafts l5 is high it will be seen that byv this means of transmission the speed will be greatly reduced and the power correspondingly increased` For the purpose of rotating the turret a partial revolution corresponding to the distance between any two operative positions I have provided a swinging leverill, journalcd at its inner end on the shaft 8 with a supporting-collar 50. At its outer end is mounted a nger 51, projecting up through an annular slot 52 into one of the holes 55 in the inv 'ax dlyprojeeting flange 54 of the tu rrct 6, the holes 'being regularly spaced and located to correspond to the position and number of the chuckholders. motion through the are of a circle correspond ing to the distance between two positions of the chuck-holders and is operated by a connecting-rod 55, pivot-ally secured to the lever its outer end a finger 58 in engagement with a cam-groove 5i) on the cani GO, supported on the shaft G1, the groove being so designed' as to cause the rod 55 to travel forward and back, thereby operating the lever through the desired are. The pin 51 is so mounted in the end of the lever 49 as to be capable of vertical movement and is provided with a coiled spring 62 surrounding the pin, resting on the upper side of the lever and bearing against a collar (53 of the pin so as to raise it into an operative position to engage the hole 53, the motion being limited by a nut Gi. At its top the pin 5l is beveled on the back side at 65, whereby it will be automatically forced down and out of engagement with the hole on the back travel of the lever, the spring causing it to rise and enter the next hole when in register.

For the purpose of locking the turret 6 in position and so holding it during the operation of the various tools, a locking-bolt G6 is mounted at the front of the machine, passing through a bearing G7 in the upper table and entering one f the locking-holes (i8 in the outer edge of the turret, corresponding in number and regularity ot' intervening space to the holes 53. At its outer end this bolt is pivotally connected to a reciprocating lever 6i), secured to a rock-shaft 70, pivotcd in a bearing 7J, secured to the framework of the machine7 a cam-lever "2 projecting downwardly alongside the cam 60 and provided with a pin 73S, entering the cam-groove 74, by which means the locking-bolt is operated, the cam-groove 7i being so designed as to insert and withdraw the locking-bolt at the .beginning and end ol the period ol' rest of the turret.

The lever if) has a swingingl The cani GO ismounted on its shaft and the shaft 6l is mounted in bearings secured to the frame of the machine in a manner similar to the shafts 31, and motion is imparted to it at the same speed and through the similar mechanism of worm 48, worm-wheel 47, and gearing ai 43 as employed to operate the shafts 3l, as already described.

In the operation of my machine the blanks to be operated on are inserted in the chucksv 23 of the lathe successively as the turret is ro -tated, theoperator occupying a position at the front of the machine designated by the letter A. The blank is then carried around by the revolving turret, the clutch having been thrown into engagement whereby it is caused to rotate until arrivingat the position B, when the turret will be stopped by the terniination of throw of lever if). The lockingbolt GG is then inserted. The tool-carrying shafts 29 will then be advanced and the blank while rotating will be acted on by the tool until the shaft 29 has advanced tothe limit of its stroke due to the cani Si, when the tool will then recede and the blank will be advanced to the next position C, and in succession to positions D, E, and F, the operation being similar in each case, but a different tool being used onpach successivo tool-holding shaft, whereby the blank is sub jected to a ditcrent operation in succession, until it linally arrives again at the position A, when the clutch will be thrown out of en gagement and the finished blank will beremoved by the operator and a new one inserted. It will then b'e seen that the opera tion is continuous, and that each of the five chucks will contain blanks in different stages of'operation, the action being entirely automatic from start to finish.

Variations may be made in the design, proortions and arrangement of m machiney without departing from my invention, and ther numbers of chuck-holders and tool-shafts may be varied to suit dilt'erent leohirenieuts of use, and all such changes and variation as maybe made by the skilled mcchanicarc eontemplated by me and considered as partof my invention.

l. A turret-lathe provided with a main table, a rotating turret mounted centraliy thereon, means for intermittently rotating the turret a partial revolution, laterally arranged, equally spaced chuck supporting shafts mounted on the turret formed in two parts with con uecting clutch mechanism, a"eentral vertical powershaft provided ,with bei/ei gear-wheel meshing into bevel gear-wheels mounted on the inner ends of the ehuck-supporting shafts, and rcciprocatingl tool-holders ,with mechanism for advancing toward and withdrawing from the chucks, substantially as set forth.

2. in a turret-lathe provided with a main table, a rotating turret mounted centrally thereon, means i'or intermittently rotating the IIC ` motion from a prime moverand a bevel-wheel i i lirret a partial revolution, reciprocating teolelders, and turret-locking mechanism; a main powershaft with means for imparting on its inner end, a central vertical power-distributing shaft provided witn a bevel-wheel in engagement with the main power-shaft bevei-wheel, lateral drivingshafts provided with bevel-wheels in engagement with the bevel-wheel on the central shaft, seconda-ry driving-shafts located above the lateral dri ving-shafts, and intervening driving mechanism by which motion is imparted from the lateral` driving-shafts to the secondary driving-shafts substantially as set forth.

3. ln turret-inthe provided with a main table, a rotating 'turret mounted centrally thereon, means for intermittentlyY rotatingthe turret a partial revolution, reciprocating toolholders, and turret-hnzking mechanism; the Combination therewith of a main power-slntft with menus for imparting motion from a prime mover, and a bevel-wheel on its inner end, a central vertical powendistributing shaftprovided with t beveifwheel in engagement with the main power-shaft bevel-wheel, lateral driving-shafts provided with bevel-wheels in engagement with the bevel-wheel on the eentral shaft, secondary driving-shafts located nbove the littoral driving-shafts, worin gearwheels mounted. on the lateral driving-shaft aild main power-shaft respeotively; worm pinion wheels in engagement therewith mounted on the ends of intervening shafts having a bevel-wheel in mosh with a corresponding bevol-wheel mounted in the secondary driving-shafts, with bearings for the intervening shafts, substantially as set forth.

i. ln a turret-latthe provided with. a rotating elinek-si|pporting tu rrt, means for rotating the chucks, and means for holding the turret stationaryat operative positions of the ehuelis; :t reciprocating toolholder mounted in bearings opposite the chucks at suoli operative positions, a pivoted lever connected to thetoohholder and to an operating-rod pro* vided with t oain-1inger, and a @am provided with t groove engaging the finger, substantially as set forth. A

5. ln n turret-lathe provided with a4 main stationary table, a rotating ehuclesupporting turret, means for rotating the ehuehs consist ing of bevel-wl'ieels mounted on the inner ends of the ehuelesupporting Shafts in mesh with a driving douhle wheel mounted on the top of a vertieal driving-shaft; ai shifting lever pivoally mounted on the ,'ertieal shaft provided with a pin projecting through nn annular slot in the table :ind designed to engage holes in the bottom of the turret with means for opera-ting the iever, substantially as set forth.

G. .in a turret-lathe provided with a main stationary table, a rotating elinek-supporting turret, means for rotating the chucks consistingof bevel-wheels mounted on the inuerends of the chin:li-supporting shafts in mosh with a driving bevel-wheel mounted on the top of a vertical driving-shaft, a shifting lever pivotally mounted on the vertical shaft provided with a pin havinga cushion-spring to permit of vertical movement projecting through an annular slot in the table and designed to en gage holes in the bottom of the turret, and a rod, pivotally connected tothe shifting lever, mounted in bearings in the table provided with n cam-linger and an operating-cani provided with a groove for engaging the linger, substantially as set forth.

7. In a turret-lathe provided with a main stationary table and a rotating chuck-supporting turret provided with looking-holes in its edge and an operating-earn designed to impart motion to the turret-shifting mechanism; a loelfingbolt mounted in the main table pivotally eonneoted to it erank-arin mounted on a rook-shaft supported in bearings seeu red to the table and provided with a crankarm having a iin ger engaged by a @nin-groove in the shifting Cam, subst-antiallyas set forth.

S. li :t turret'lathe in combination with a vertieal shaftamain driving-shaft and lateral shafts provided with bevel gear-wheels in mesh with a bevel secured to the vertical shaft, and a series of .lateral earn-shafts and cams thereon located above the main driving and lateral shafts; pouf'er-transmitting mechanism consisting of wormwhee1s secured to the di'ivingsliafts, Worin pinion-wheels in inesh therewith, inoun ted on the ends of shafts having bevel-wheels in mesh with bevelwheels secured to the cam-shafts, sulostairA tially as set forth.

ICO

9, In a turret-lathe provided with n revolving turret and :t central vertical power-imparting shaft provided with ay driving bevelwheel on the top; chuck supporting find rotating mechanismconsisting of a hollow shaft having on its inner ond a bevol-wheol in mesh with a driving-bevel, t fixed elnteh on its outer end, a. chuck-supporting shaft provided with a reduced extension. projecting into the hollow shaft, provided with eehuok on its outer end, and a sliding clutch on its inner end, designed to engage the lixed eluteh with mechanism for operating the eluteh, substantially as set forth.

10. The combination in a turrot-lztthe of a mai'n table, a rotating turret 'mounted eentrally thereon, equally-spaced chuck-snpporting shafts :non nted on the turret formed in two parts with. connecting eluteh 'prochain ism, a central vertical power-shaft provided with a bevel gear-wheel meshing into bevel gear-wheels mounted on the inner ends of the ehnelesupporting shafts, reciprocating iool.-holders mounted in bearings opposite the ehueks at the operati ve positions, pivoted levers eonneeted to the tool-holders and to operatingrods provided with cam-lingers, cams mounted on lateral shafts and provided with grooves engagingthe lingers, and bevelwheel and wornrgearing eonneetingsueh let eral shafts with nia-in lateral driving-shafts IIC having heVeLWheels in mesh with a main driving bevel-Wheel on the `central `Vertical poweieshaft, substantially as set forth.

1l. The eombinatonin a turret-lathe of a main table, a rotating turret mounted oentrally thereon, equally-spaced chuck-sup-y porting shafts mounted on the turret formed in two parts with connecting eluteh meehan ism, a central vertical power-shaft provided with a bevel gear-Wheel meshing into bevel gear-wheels mounted onithe inner ends of the eliilelosupporting shafts, reciprocating toolholders mounted in. bearings opposite the chucks at the operative positions, pivoted levers connected to the tool-holders and to operating-rods provided With cam-fingers, cams i mounted` on lateral shafts and provided with grooves engaging the fingers, bevel-Wheel and worxwgearin g connecting such lateral shafts `with main lateral driving-shafts having bevelwheels in mesh with a main driving `bevelwheel on the eentral vertical powenshaft and i ashifting lever pivotally mounted on the vertical shaft provided With a pin projecting through an annular slot in. the table and designed to engage holes in the 'bottom of the turret 1with a eonneeting-rod havinga` finger engaged by a groove of a @am on one of the canrsha'fts, substantially as set forth.

12. The combination in a turretlathe of a main table, a rotating turret mounted eentrally thereon, equally-spaced ehuek-snp porting shaftsmounted on theiturret formed in two parts with connecting clutch 1neel1ani ism, a central vertical power-shaft provided with a bevel gear-wheel meshing into bevel gear-wheels mounted on the `inner `ends of the chuck-supporting shafts, reciprocating tool-holders mounted in bearings opposite the chucks at the operativepositions, pivoted le-` vers eonneet'edto the tool-holders and to operating-rods provided with eaIn-in'gers, Gams mounted on lateral shafts and provided with grooves engaging the fingers, bevel-Wheel and worm-gearing connecting such lateral shafts with main lateral driving-shafts havingbevel- Wheels in mesh with a main driving bevel- Wheel on the eentral vertical power-shaft and a loeking-bolt mounted' in the main table adapted to enter looking-holes in the edge of `the rotating turret and connected to a pivoted crank-arm having a `finger engaged `by a canrgroove in a shifting cam on one of the `earn-shafts, substantially as set forth.

In testimony whereof I have hereunto set my hand this 9th day of January, 1S97. Y

i i i JOHN RODGERS.

lVitnesses: i i

J. V. MCCORMICK, C. M., CLARKE. 

